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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Piston Choice
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<blockquote data-quote="b'knighted" data-source="post: 103585" data-attributes="member: 59"><p>A neighbour had a tractor, possibly New Holland, which he had fitted with an engine from the same make of crawler. This vehicle had a diesel/petrol engine. On one side was the petrol pump, distributor and carb while the other side had a fuel pump, injector pump and injectors. The change of compression ratio was achieved by having the extra combustion chamber opened or closed by a poppet valve so with the valve open the engine was fired up as a low compression petrol engine then once warm the diesel fuel was fed to the injectors and the valve was closed as the sparks and petrol were turned off. It would seem likely that the spark plug was in the extra chamber.</p></blockquote><p></p>
[QUOTE="b'knighted, post: 103585, member: 59"] A neighbour had a tractor, possibly New Holland, which he had fitted with an engine from the same make of crawler. This vehicle had a diesel/petrol engine. On one side was the petrol pump, distributor and carb while the other side had a fuel pump, injector pump and injectors. The change of compression ratio was achieved by having the extra combustion chamber opened or closed by a poppet valve so with the valve open the engine was fired up as a low compression petrol engine then once warm the diesel fuel was fed to the injectors and the valve was closed as the sparks and petrol were turned off. It would seem likely that the spark plug was in the extra chamber. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Piston Choice
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